<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>闭包使用</title>
</head>

<body>
  <script>
    // let i=0
    // function fn(){
    // i++
    // console.log(`函数调用了${i}次`)
    // }
    // fn()
    // fn()
    // fn()
    function outer() {
      let i = 0
      function fn() {
        i++
        console.log(i)
      }
      return fn
    }
    const  count=outer()
  </script>
</body>

</html>